Proposal: Add host resources automatically

[agagniere]

TL;DR:

    .{ .key = "telemetry.sdk.name", .value = .{ .string = build_info.name } }, // package name: "opentelemetry"
    .{ .key = "telemetry.sdk.language", .value = .{ .string = "zig" } },
    .{ .key = "telemetry.sdk.version", .value = .{ .string = build_info.version } }, // package version, currently "0.0.1"
    .{ .key = "os.type", .value = .{ .string = os_type } }, // from builtin.os.tag
    .{ .key = "host.arch", .value = .{ .string = host_arch } }, // from builtin.cpu.arch
    .{ .key = "process.runtime.name", .value = .{ .string = "zig" } },
    .{ .key = "process.runtime.version", .value = .{ .string = builtin.zig_version_string } },

[inge4pres]

This is a very good idea! thanks for adding this 🙏🏼
There are cases in which users may not want to add the same attributes to all providers, can we have a flag to opt-in into this behavior?
Attributes and their (mis)usage is probably the most controversial and delicate topic in OpenTelemetry, so letting users decide on how to enable this behavior seems the most sensible approach.